[compiler-rt][ASAN] Replace find_executable with shtuil.which in script

distutils is deprecated and shutil.which is the suggested
replacement for this function.

https://peps.python.org/pep-0632/#migration-advice
https://docs.python.org/3/library/shutil.html#shutil.which

which was added in 3.3 (https://docs.python.org/3/library/shutil.html#shutil.which)
and LLVM requires at least 3.6 (https://llvm.org/docs/GettingStarted.html#software).

Reviewed By: delcypher, vitalybuka

Differential Revision: https://reviews.llvm.org/D148528

compiler-rt/lib/asan/scripts/asan_symbolize.py

@@ -26,9 +26,9 @@ import getopt
 import logging
 import os
 import re
+import shutil
 import subprocess
 import sys
-from distutils.spawn import find_executable
 
 symbolizers = {}
 demangle = False
@@ -155,7 +155,7 @@ class Addr2LineSymbolizer(Symbolizer):
     addr2line_tool = 'addr2line'
     if binutils_prefix:
       addr2line_tool = binutils_prefix + addr2line_tool
-    logging.debug('addr2line binary is %s' % find_executable(addr2line_tool))
+    logging.debug('addr2line binary is %s' % shutil.which(addr2line_tool))
     cmd = [addr2line_tool, '-fi']
     if demangle:
       cmd += ['--demangle']